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Eco-friendly way of decomposing BPA-containing plastic

Date:
February 3, 2010
Source:
American Chemical Society
Summary:
Just as cooking helps people digest food, pretreating polycarbonate plastic -- source of a huge environmental headache because of its bisphenol A content -- may be the key to disposing of the waste in an eco-friendly way, scientists have found.

Fungi may provide an eco-friendly way of decomposing polycarbonate plastic waste that contains bisphenol A.
Credit: American Chemical Society

Just as cooking helps people digest food, pretreating polycarbonate plastic -- source of a huge environmental headache because of its bisphenol A (BPA) content -- may be the key to disposing of the waste in an eco-friendly way, scientists have found. Their new study is in ACS' Biomacromolecules.

Mukesh Doble and Trishul Artham note that manufacturers produce about 2.7 million tons of plastic containing BPA each year. Polycarbonate is an extremely recalcitrant plastic, used in everything from screwdriver handles to eyeglass lenses, DVDs, and CDs. Some studies have suggested that the BPA may have a range of adverse health effects, sparking the search for an environmentally safe way of disposing of waste plastic to avoid release of BPA.

The scientists pretreated polycarbonate with ultraviolet light and heat and exposed it to three kinds of fungi -- including the fabled white-rot fungus, used commercially for environmental remediation of the toughest pollutants. The scientists found that fungi grew better on pretreated plastic, using its BPA and other ingredients as a source of energy and breaking down the plastic. After 12 months, there was almost no decomposition of the untreated plastic, compared to substantial decomposition of the pretreated plastic, with no release of BPA.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Artham et al. Biodegradation of Physicochemically Treated Polycarbonate by Fungi. Biomacromolecules, 2010; 11 (1): 20 DOI: 10.1021/bm9008099

Cite This Page:

American Chemical Society. "Eco-friendly way of decomposing BPA-containing plastic." ScienceDaily. ScienceDaily, 3 February 2010. <www.sciencedaily.com/releases/2010/01/100127113753.htm>.
American Chemical Society. (2010, February 3). Eco-friendly way of decomposing BPA-containing plastic. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2010/01/100127113753.htm
American Chemical Society. "Eco-friendly way of decomposing BPA-containing plastic." ScienceDaily. www.sciencedaily.com/releases/2010/01/100127113753.htm (accessed July 31, 2014).

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